Electric furnace



an 8 9 7 J. R. coE

ELECTRIC FURNACE Filed Apri-1 5. 1923 2 Sheets-Sheet l i INVNTOR- YATroRN S m. #m JU.. -Q l ---n J .|l||l\l \||H| -mw mv rmi. n N. .n Y h..i uw v sv \4\\\\ S l ...lull k nm mv Il W. hh L.- N9 m .o v x mw E v w l,x5 im W Ovx um hw, 2 wv 4 u mw WN. x m. n n. h N

[15,109 Jan. 18, l927 J. R. CCE

ELECTRI C FURNACE Fqed April 5. 1923 2 Sheets-Sheet 2 Ooo' o o 096 57ooo .Z7 0o INVENTOR (M ATTORNEY u racks 5 being engaged by pinions 13driven Patented Jan. 18, 1927.

UNITED STATES PATENT OFFICE- JAMES ROBERT CQE, OF WATERBUBY,CONNECTICUT, `ASSIGNCR TO THE AMERICAN BRASS COMPANY, OF WATEBBUBY,CONNECTICUT, A CQREOBATION 0F CONNECTI- CUT.

AELECTRIC Application med April 3,'

The following is a description of an emy bodiment of my invention,reference being had to the accompanyin drawin ,inwhich, Fig..1 shows averticalongitu inal section of a furnace embodying my invention; l

Fig. 2 shows a section-,on the line 2.-2,

1; and

gig. 3 shows an end view of the furnace cylinder and lcradle on the line3-3, Fig.- 1.

Referring more particularly to the drawings,-1` is -a metallic casingprovided with a re ractory lining 3, the same constituting the furnace clinder havin its axis horizon tal. This cy inder is provided withcircular racks 5 and tracks 7, the tracks 7 being supported by rollers 9in a cradle 11 and the by an electric motor 15 throu h a worm gear asshown in Fi 1 and 3. A he ends of the furnace are eac rovided with axialorifices 17 through whic the inner ends of electrodes 19 can`beintroduced and withdrawn. The inner ends of these orifices are providedwith bushin .21 of refractory insulating `material which ,closelysurround thev elec trodes 19. The outer ends of the opening 17 areconsiderably larger than the orifices in the bushin 21 and are adaptedtoffreceive annular p u 23 of refracto insulating material whichsurround thee ectrodes 19. These plugs are provided with hollow metalliccastings 25 forming chambers forthe circulation of a cooling medium,such as water. The cylinder'l is provided with doors27 awingin aboutApivots V29 and engaging stops 31 1n their lowermost position,l the saistops being located between the axis of the cylinder and the spout 33.The 'cylinder is provided with trunmons v 35 which are approximatel 1nlie with the trunnions form' an anchorage for .hooks 39 and saidtrunmons4 35 forming. means for of the/spout 83 and wit othertrunnion'satl` the rear ofA the cylinder, said other summon.

1923. serial mi. 629,541.

attaching the hooks 41 of a lifting and tilt ing mechanism carried by atraveling crane, preferably'that of my Patent No. 1,395,040,

dated October 25,1921.

With the horizontal cylinder and cradle thus described, the cylinder canbe rocked backward and forward by the electric motor, suitable means(not shown) being provided for reversal of the motor at the proper timeas is common in rockingfurnaces, and yet the cylinder, after theelectrodes and plugs have been Withdrawn, can be lifted and transportedindependently of the electrodes and their supporting mechanism and thepouring done wherever desired, the hot gases and fumes being practicallyconfined to the interior ,of `the cylinder 4during the trans portationperiod by the closi-ng of the doors 27. i

In order to support and manipulate the electrodes 19 and plugs 23 Iprovide at each end of the cylinder a supporting standard 43 having atits upper end a sliding frame 45, in one portion ofv which the plug 23is mounted'so as to be carried thereby.l This slide is adjusted byascrew 47 which engages a suitable threaded boss forming a part of thesupport 43. Each slidingframe 45 has a bar 46,4 which in turn carries aslide 51 to which an insulated electrode clamp' 49 is attached byinsulated screws '52, This slide. has a de nding yoke 53 engaged by ascrewthreade shaft 55 so that by turning together with t e electrode 19can be moved so as to cause the electrode to enter or with# draw fromthe orifice 17, as shown onthe left and right hand ends -of Fig. 1respecthe, shaft 55 throu'h the wheel 57 the clamp 49 Y' edwithin thesamesoas to secure the desired 1 relations.

The electrical conductors 56 for supplying -electrical. energy to thefurnace are clamped directly tothe clamps' 49 and the .clamps 49 areelectrically insulated, as shown at 58, so thatthe proper electrical andcirof the-fur`nace.

cuit conditionaare secured for the operation As Winbe evident mums@skilled in the art, my invention permits of various modificationswithout departing from the spirit thereof or the scope of the appendedclaims.v

' Wha-t I claim is: o

1. In a rocking electric furnace a horizontal cylinder having in itsends openings in line with the axis of movement of said cylinder, theouter portions of said openings being larger than the inner portionsthereof, electrodes substantially filling the inner portion of saidopenings, plugs surrounding said electrodes and substantially fillingthe of said cylinder, and means for lifting said 'cylinder when saidplugs and electrodes are in outward position.

` 2.,In an electric furnace, the combination of a furnace cylinderhaving axial orifices at its ends and a spout on itsfront side, a cradlefor supporting the same, means for rotating said cy inder within saidcradle, electrodes adapted-to enter said orifices, means for su portingsaid electrodes independently of said cylinder, means for moving theinner ends of said electrodes into and withdrawing them from saidorifices, means for closing said orifices when said electrodes arewithdrawn, and means for securing lifting and tilting means to said clinder.

JAME ROBERT COE.

